It's Rin and Haruka's turn to show off their singing skills!

Now that the anime's second season is confirmed, fans can sit back relax and wait for the summer, NOT! Sexy summer swimming anime Free! has the fourth Duet CD set for release soon, featuring the epic rivals Haruka and Rin! The anime's official site even features the generous preview video posted on the Lantis official You Tube channel as well as the official CD cover, they're even wearing matching rings!

In the drama CD track, it sounds like Rin is spending a night at Haruka's house. I won't say more.